Burner control apparatus



July 7, 1936. H. K, RICHARDSON 2,046,413

BURNER CONTROL APPARATUS Filed May 7, 1932 lNvENToR m fl. A. WCHA/@50N ATTORNE Vthe casing 44 and extension casing 55 so'as to .constitute a pressure chamber 56. This pressure Y chamber is connectedby a nipple 51 with the con- Y duit I1 so that the chamber 56 contains gas at the same pressure as the gas in the conduitY I1. Y VThe conduit I1 is provided withla gate valve 58 to admit gas from the main I5, andV is also provided with a. needle valve 5s td regulate tne'pr'essure ofthe gas'fed to the mixer I I.

admit air Vto the control'device I0 which serves valves 64 and 65 are provided. Itis to be under-VV stood that by-pass 62 is not employed in accordv ance with the present invention but serves as a Vpropergzats pressure.YV Y Y Y During the normal operation of the burnersthe pressure in the chamber` 56 `Will b e thersame asV Ameans for operating the burners in the event that it is necessaryvto adjust or otherwise rter-r fminate the action' of the control device.

The control device employed serves to maintain an air-,gas ratio andV aV Vconstant manifold pressure. The manifold I2 may be provided with Va definite numberof burners which may allbe Y Voperated in Whichcase the control device willbe set so that a definite amount of air is passed.to

the manifold. Likewise, Vthe needle valve 59 'in the gaS pipe I1 will'be adjustedto provide the the pressure in the pipe I1.L If, however,k one or more of the burners is cut offa back pressure in. thegas pipe will 'occurV causing thebellows fdiaphragm to actuate and force the'push rod 48 Y to move, thereby lifting the end 34 of the lever 29 and causing the pin 26 to enter .theorifice .Thefadjustments Vmay be so to cut down the air supply.`

VV amount of `air cut off by the'` pin 276 is the correct amount to. keep theY air'gas ratio constant and to Ycause Va dro-pain the air pressure tothe extent that themanifoldpressure stays. constant. The type of mixer employedY together with the taper of the pn26y and the area of theorice 21 con- A trol the gas and air pressures in use. y It has been l to 1 found that with the properV relativeproportions I of the elements a change in gas consumption of 15 per cent does not affect theV air gas ratio Vby more than 1 percent. To change the air gas ratio,the pin 43 may be used'to adjust the quantity of air flowingwhile thervalve 59 in the gas pipe may be used to change the quantity of gas vlfiovving. Either of theseadjustments makes a jchange in thejoperating pressurey in the manifold.

Y When the present apparatus is to be used with a given number of flames, the fiamesareset for approximately the right mixture and flamelength,

' thenthe valve 59, Vadjustment pins 38 and43 are adjusted until the pressure gauge connected'to the'manifold of suitable type` (not shown)Y refmainsconstant'within 1 Vper cent when' 15 per cent emanifold load is removed. Afterjthis first adjustment, the position of the adjustment pin 38 should not be altered. Y Y Y *ItV has been found' that when making the setting care should Vbe taken to have the valvesronV the manifold burners three-quarters open which `'The Vconnece Vvtion I8 leading from the main air supply to the air filter I9 is provided with a gate valve 6I `to niade that A the the gas in said gas pipe. Y e

5. A gas burner having a mixing chamber, anA air conduit leading to said chamber, a gas conduit will give a manifold pressure of sufilcent range Y for valve changes.

It has also been found'that'adjustment of fires necessary to take care of changes in glass'thickness or glass quality; that is, changes in B. T. U.s,V canbe made up to 15 per cent on the individual burners Without disturbing the control Vor ad-` justment pins 38 and 43. YIf a change in' the glass quality is abnormal, a slight Vadjustment of the adjustment Vpin 43Y increases or decreases Vthe air and such Vadjustment on valve 59 similarly affects Ythegas. Y Y y By reason of the present invention it is pos-v sibleto provide an apparatus wherein a constant Working condition is always maintained insofar as the fires are concerned and in which thedisadvantage of variations-.in temperature due to theV use of varying numbers of flames. is avoided.

Although a preferred embodiment of the invention is shown and Vdescribed herein, it is to be understood that modifications may be made therein without departingV from the spirit and scope Vof the Vinvention Y pen-ded claims.` Y

Iclaim: Y Y, 1. Y

L 1. Agas flame controlapparatusV comprising a gas and airfmanifold having a pluralityrof burners, a gas and airmixing chamber connected to said manifold, an air pipe for supplying air `to said chamber', agas pipe for supplying `gas torsaid chamberga diaphragm, means for subjecting said and an oscillatory member movable bywsaidfdia-V as set forthA in the apdiaphragm to the pressure of the gas insaid pipe, Y j

phragm for'` decreasing` theiow of airV in `said `pipe upon an. increase in Vthe pressure, of gas in said gas pipe.

v2.` An apparatus of the class described comprisfV Vinga manifoldhaving an outlet of a predetermined area for ignited gas and'air, Va gas pipe` andl an air pipe `communicatingwith said .manifold,j..

means for regulatingthe flow of .air in Vsaid Vair pipe,V means movable in; accordance with variations inpressure of said gas in saidigaspipe and a member; for translating motion Vto said first mentioned means foridecreasing ther'air supply in increase in the'gaspressure iin said gaspipe. l

g 3. apparatuslof the ,class; described oomsaidair pipe'upon an prising a manifold 'having an outletfof a bredetermined area for ignited gas andY air, a'gS Pipe andjan air pipe communicating with Sadmarli-` Y fold, meansfor regulating the rflow of' airainy said air pipe, means movable'in accordance vwith lvariations in the gas pressure lfand mechanical means `operated by:V said second' mentioned Vmeans for translating motion to saidfhfirstA mentioned means for rdecreasing the iiow-of 4said airv upon inV crease in the gaspressure in said gas pipe.

4. A gas burner having" a mixing chamber, .an Y air conduit .leading to saidchambr, a gas con-` duit leading to` said chamber, air regulating means responsive to V the pressure 'of gasvin said gas conduit and a member'intermediate said first and second mentioned means'operable tov translate .motion from said pressure controlled means Vto. said air regulating means for" decreasing the supply of air uponk an increase inthe pressure of fmeans Vfor said Yair conduitfpressure controlled leading to saidrchamber', air regulating means Vfor Asaid air conduit, pressure Vcontrolled means responsive to the'pressure of gasinsaid gas'conduit and a member intermediate said air regu- 75 lating means and said pressure controlled means, said member having one portion arranged to be moved by said pressure controlled means and another portion arranged to move said air regulating means to decrease said air supply upon an increase in the pressure of said gas.

6. A gas burner having a mixing chamber, an air conduit leading to said chamber, a gas conduit leading to said chamber, air regulating means for said air conduit, pressure controlled means responsive to the pressure of gas in said gas conduit and an oscillatory member having a pivot point intermediate said air regulating means and said pressure controlled means, one end of said member being arranged to be moved by said last mentioned means and the other end arranged to actuate said rst mentioned means to decrease said air supply upon an increase in the pressure of the gas in said gas conduit. Y

7. A gas burner having a mixing chamber, an air conduit leading to said chamber, a gas conduit leading to said chamber, air regulating means for said air conduit, pressure controlled means responsive to the pressure of gas in said gas conduit and an oscillatory member having a pivot point intermediate said air regulating means and said pressure controlled means, one end of said Y for moving said member ln opposition to movement imparted by said pressure controlled means to decrease the supply of said air upon an increase in the pressure of the gas in said gas conduit.

8. A gas flame control apparatus comprising a gas and air manifold having a plurality of burners, a gas and air mixing chamber, an air inlet pipe for supplying air to said chamber, a gas inlet pipe for supplying gas to said chamber, a diaphragm controlled by the pressure in said gas pipe, a valve in said air pipe, and means intermediate said valve and diaphragm for varying the ovv of air in said air pipe upon an actuation of said diaphragm under the pressure of gas in said gas pipe, inversely as the gas pressure. y

9. A gas llame control apparatus comprising a gas and air manifold having a plurality of burn-` ers, a gas and air mixing chamber, an air inlet pipe for supplying air to said chamber, a gas inlet pipe for supplying gas to said chamber, a diaphragm operable under the pressure in said gas pipe, an adjustable valve for regulating the flow K HENRY K. RICHARDSON. 

